Cooktop grates



FIG. 1 is a front perspective view of the design of the cooktop grates;

FIG. 2 is a top elevational view thereof;

FIG. 3 is front elevational view thereof; and,

FIG. 4 is right side elevational view with the left side being a mirror image thereof.

The portion shown in broken lines is for illustrative purposes only and does not form any part of the invention. 

The ornamental design for cooktop grates, as shown and described. 